28047066075 has 144 divisors (see below), whose sum is σ = 59768007936. Its totient is φ = 12772080000.

The previous prime is 28047066053. The next prime is 28047066083. The reversal of 28047066075 is 57066074082.

It is not a de Polignac number, because 28047066075 - 2¹⁰ = 28047065051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28047066075.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 12458700 + ... + 12460950.

Almost surely, 2^28047066075 is an apocalyptic number.

28047066075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28047066075 is an abundant number, since it is smaller than the sum of its proper divisors (31720941861).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28047066075 is a wasteful number, since it uses less digits than its factorization.

28047066075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576 (or 2559 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 28047066075 in words is "twenty-eight billion, forty-seven million, sixty-six thousand, seventy-five".